1#!/bin/sh
2
3#   Copyright (C) 2003, 2005, 2007 Free Software Foundation, Inc.
4
5# This program is free software; you can redistribute it and/or modify
6# it under the terms of the GNU General Public License as published by
7# the Free Software Foundation; either version 3 of the License, or
8# (at your option) any later version.
9#
10# This program is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13# GNU General Public License for more details.
14#
15# You should have received a copy of the GNU General Public License
16# along with this program.  If not, see <http://www.gnu.org/licenses/>.
17
18#
19# gcore.sh
20# Script to generate a core file of a running program.
21# It starts up gdb, attaches to the given PID and invokes the gcore command.
22#
23
24if [ "$#" -eq "0" ]
25then
26    echo "usage:  gcore [-o filename] pid"
27    exit 2
28fi
29
30# Need to check for -o option, but set default basename to "core".
31name=core
32
33if [ "$1" = "-o" ]
34then
35    if [ "$#" -lt "3" ]
36    then
37	# Not enough arguments.
38	echo "usage:  gcore [-o filename] pid"
39	exit 2
40    fi
41    name=$2
42
43    # Shift over to start of pid list
44    shift; shift
45fi
46
47# Create a temporary file.  Use mktemp if available, but cope if it is not.
48tmpfile=`mktemp ${name}.XXXXXX 2>/dev/null` || {
49  tmpfile=${name}.$$
50  if test -e $tmpfile; then
51    echo "Could not create temporary file $tmpfile"
52    exit 1
53  fi
54  touch $tmpfile
55}
56trap "rm -f $tmpfile" EXIT
57
58# Initialise return code.
59rc=0
60
61# Loop through pids
62for pid in $*
63do
64	# Write gdb script for pid $pid.  
65	cat >>$tmpfile <<EOF
66attach $pid
67gcore $name.$pid
68detach
69quit
70EOF
71
72	gdb -x $tmpfile -batch
73
74	if [ -r $name.$pid ] ; then 
75	    rc=0
76	else
77	    echo gcore: failed to create $name.$pid
78	    rc=1
79	    break
80	fi
81
82
83done
84
85exit $rc
86